/* ================================================================================
//	Crypteviant!
//	Providing tough encrypted P2P Chat
//	Copyright (C) 2010  Martin Pfeifer, Tobias Rausch
//
//	This program is free software: you can redistribute it and/or modify
//	it under the terms of the GNU General Public License as published by
//	the Free Software Foundation, either version 3 of the License, or
//	(at your option) any later version.
//
//	This program is distributed in the hope that it will be useful,
//	but WITHOUT ANY WARRANTY; without even the implied warranty of
//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//	GNU General Public License for more details.
//
//	You should have received a copy of the GNU General Public License
//	along with this program.  If not, see <http://www.gnu.org/licenses/>.
// ============================================================================== */

#include "timerunix.hpp"


// Namespaces
using namespace Timer;

TimerUnix::TimerUnix(QObject *parent) :
    AbstractTimer(parent),
    m_useHighResolution(false)
{
    // Check if a high resolution Timer is available
    m_useHighResolution = HighResTimerUnix::isAvailable();

    // Get the initial time
    if (m_useHighResolution)
    {
	m_startTime = HighResTimerUnix::getCurrentTime();
    } else {
	m_startTime = StandardTimerUnix::getCurrentTime();
    }

    // Set internal state
    setState (AbstractTimer::INITIAL);
}


unsigned long TimerUnix::getCurrentTime() const
{
    // Get the current time
    if (m_useHighResolution)
    {
	return HighResTimerUnix::getCurrentTime();
    } else {
	return StandardTimerUnix::getCurrentTime();
    }
}


void TimerUnix::start()
{
    // Reset the values
    reset();

    // Get the start time
    if (m_useHighResolution)
    {
	m_startTime = HighResTimerUnix::getCurrentTime();
    } else {
	m_startTime = StandardTimerUnix::getCurrentTime();
    }

    // Set internal state
    setState (AbstractTimer::STARTED);

    // Signal
    emit started (m_startTime);
}


void TimerUnix::stop()
{
    if (getState() != AbstractTimer::STARTED && getState() != AbstractTimer::INITIAL)
    {
	return;
    }

    // Get the stop time
    if (m_useHighResolution)
    {
	m_stopTime = HighResTimerUnix::getCurrentTime();
    } else {
	m_stopTime = StandardTimerUnix::getCurrentTime();
    }

    // Set the appropriate internal state
    if (m_startTime == m_stopTime)
    {
	setState (AbstractTimer::TIMES_EQUAL);
    } else {
	setState (AbstractTimer::STOPPED);
    }

    // Signals
    emit stopped (m_stopTime, m_startTime);
    emit stopped (m_stopTime - m_startTime);
}
